jim: change the output of errorInfo

Rather than "Runtime Error: <file>:<line>: ...", use
use "<file>:<line>: Error: ..."

This latter format is both shorter and more consistent with other tools (e.g. gcc).
This also allows errors to be reported with the default errorfmt of vim's quickfix feature.

Signed-off-by: Steve Bennett <steveb@workware.net.au>

stdlib.tcl

@@ -70,7 +70,7 @@ proc errorInfo {msg {stacktrace ""}} {
 	}
 	lassign $stacktrace p f l
 	if {$f ne ""} {
-		set result "Runtime Error: $f:$l: "
+		set result "$f:$l: Error: "
 	}
 	append result "$msg\n"
 	append result [stackdump $stacktrace]